Iran president warns of 'war situation' as sanctions resume
Caravan migrants arrive in Mexico City, bed down in stadium
Separatists kidnap 79 pupils in Cameroon's restive northwest
Chinese 'gait recognition' tech IDs people by how they walk
More protection: UN says Earth's ozone layer is healing
Lion Air jet's airspeed indicator malfunctioned on 4 flights
New Zealand fisherman's ocean rescue of toddler 'miraculous'
Tusk defends actions as former PM at Poland's pyramid probe
Turkey: Saudi investigators worked to remove evidence
Romanian ex-prison chief who tortured inmates dies in jail
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